Working Prophet

With the rapid rotation of the propeller, the drone slowly rose from the grass, flew to a height of about ten meters in the air, and stopped there.

Li Yu held the remote control in his hand, pushed the joystick lightly, and tested whether the aircraft's lifting and horizontal displacement functions were normal.

The signal transmission function between the drone and the remote control does not rely on the Internet, but is realized through its own antenna. In cities, due to a large amount of electromagnetic interference and environmental obstruction, the effective transmission distance will be greatly shortened.

Taking the DJI Mini 3 Pro in the hands of Li Yu as an example, the official strong interference flight distance given by the FCC standard is about 1.5 to 3 kilometers.

In the outer suburbs and the seaside, this distance is increased to 7 to 12 kilometers.

As for the green field, there is no wifi, bluetooth or other signals to compete with drones for bandwidth, which can be described as a perfect flying environment.

Of course, there are also shortcomings. Without the assistance of GPS, it is difficult for the drone to hover accurately, and functions such as route planning cannot be used, which greatly increases the risk of bombing.

But Li Yu had no choice now. He turned off the obstacle avoidance function of the drone, and flew the drone up another hundred meters to ensure that it would not be easily discovered by people below, and then controlled it to fly towards the castle. go.

At night, the pleasant evening breeze that blows from time to time causes the drone to sway and drift in the air. At such times, Li Yu also uses a stick to correct the direction of the drone.

Fortunately, even if the visual system is difficult to locate due to the surrounding dark environment, and the GPS is lost, the aircraft will still provide a basic attitude mode to help stabilize the body shape, greatly reducing the risk of crashing.

In the end, Li Yu controlled the drone and successfully crossed the high wall of Teacup Castle without alarming the troops outside the city. The people in the castle knew nothing about the arrival of this uninvited guest.

Even if someone raised his head inadvertently, he would probably only think that it was just a strange bird passing by high in the sky.

Li Yu checked the guards on the city wall one by one through the real-time images sent back by the camera.

Miss Rabbit is also by his side, responsible for identifying Alfred from it.

As Li Yu adjusted the zoom camera equipped on the drone, each face was zoomed in and zoomed in, and Ilea, who was watching, let out exclamations again and again.

But Miss Rabbit is already a little numb at the moment.

Tonight, Li Yu first helped her awaken the ancient spirit sleeping in the necklace, and then summoned a metal divine bird to fly to the sky and escape from the earth. He also used the eyes of the divine bird to see everything around her.

The girl was in shock almost all the time. Even if Li Yu suddenly yelled, "Go away, my grandson", stepped on the auspicious clouds, and somersaulted thousands of miles, Miss Rabbit probably wouldn't be too surprised. .

At most, they shouted from below, Great Sage, quickly put away your supernatural powers!

And the half face not far away was no better than hers. When the drone took off, Jude seemed to be out of body with him.

He stood there staring at the small black dot in the sky, motionless.

It was like a human cub seeing an excavator working for the first time. It couldn't look away at all and kept muttering nonsense like, "There must be a soul in that! Yes, there must be a soul!!!".

Li Yu controlled the drone and circled around the castle, but there was no trace of the old knight.

Ilea volunteered and said she could lead the way into the stone castle, but Li Yu gave up the idea after thinking about it.

After entering the stone castle, due to the obstruction of those thick stone walls, the signal will definitely deteriorate and the risk of bombing the aircraft will increase. In addition, in the cramped and narrow space, it will be difficult to avoid the drone if there is an accident.

So in the end, Li Yu chose to push the joystick and order the drone to descend in front of a soldier.

When it reached a height of almost twenty meters, the noise from the four pairs of propellers woke up the napping soldier.

He rubbed his eyes, looked in the direction of the sound, and then stayed blank.

In order to allow him to see the appearance of the aircraft better, Li Yu controlled the drone to descend some altitude.

As a result, the guy screamed, threw the spear and shield in his hand on the ground, decisively left work early, and ran away to no one knows where.

Li Yu had no choice but to let the aircraft find another soldier on the city wall.

This man became a lot more courageous, and even drew out his weapon and waved it around, as if trying to scare away the little thing in the sky that had no wings but could fly.

Li Yu was forced to admire his fighting skills for a while.

Fortunately, when he realized that his attack range was probably out of reach of the drone, he finally made the right choice. While being careful, he called a companion to inform the people in the stone castle.

Just when Li Yu relaxed his vigilance, an arrow flew out of nowhere and headed straight for the drone in the sky!

Caught off guard, Li Yu had no time to make any operations. In the end, a gust of evening wind happened to save him. The drone was blown a short distance by the evening wind.

However, he inadvertently avoided this fatal arrow.

Without hesitation, Li Yu immediately raised the height of the drone, and continued to move irregularly in the air, so the next few arrows failed to pose any threat to the drone.

After waiting for a while, an old man wearing armor and looking about fifty or sixty years old came out of the castle and climbed onto the stone wall.

He narrowed his eyes and looked carefully at the thing in the sky.

And Li Yu was also watching him through the camera of the drone.

The visitor was tall and muscular, with resolute eyes. Although there were wrinkles on his face, he did not look aged. His silver hair was meticulously taken care of, and the armor on his body was also wiped clean.

But unlike the gorgeous items used by many great nobles to set off their heroic looks, that armor is obviously old. If you look closely, there are many pits in it, faithfully recording the previous scenes for its owner. He fought fiercely, and the rabbit emblem on his right arm showed his allegiance to the family.

He also held a yew longbow in his hand, nearly two meters in length.

Receiving a battle arrow from the attendant beside him, the old knight bent his bow and set the arrow, the long and narrow dagger-shaped arrow glowing coldly in the night.

But in the end he didn't shoot the arrow.

After putting down the longbow in his hand again, he gestured to the surrounding archers, asking them to put down their weapons as well.

Those people looked at each other, and in the end they all followed orders.

Li Yu also turned to look at Ilea, and the girl nodded to him, "That man is Alfred, my guardian knight."

Upon hearing this, Li Yu controlled the DJI Mini 3 Pro, carrying the ruby ​​hanging below and Ilea's handwritten letter to the ground.

Thanks for the reward for not making 233 children's boots